Release 4.11 drivers/clk/clk-s2mps11.c
/*
* clk-s2mps11.c - Clock driver for S2MPS11.
*
* Copyright (C) 2013,2014 Samsung Electornics
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <linux/module.h>
#include <linux/err.h>
#include <linux/of.h>
#include <linux/clkdev.h>
#include <linux/regmap.h>
#include <linux/clk-provider.h>
#include <linux/platform_device.h>
#include <linux/mfd/samsung/s2mps11.h>
#include <linux/mfd/samsung/s2mps13.h>
#include <linux/mfd/samsung/s2mps14.h>
#include <linux/mfd/samsung/s5m8767.h>
#include <linux/mfd/samsung/core.h>
enum {
S2MPS11_CLK_AP = 0,
S2MPS11_CLK_CP,
S2MPS11_CLK_BT,
S2MPS11_CLKS_NUM,
};
struct s2mps11_clk {
struct sec_pmic_dev *iodev;
struct device_node *clk_np;
struct clk_hw hw;
struct clk *clk;
struct clk_lookup *lookup;
u32 mask;
unsigned int reg;
};
static struct s2mps11_clk *to_s2mps11_clk(struct clk_hw *hw)
{
return container_of(hw, struct s2mps11_clk, hw);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yadwinder Singh Brar | 24 | 100.00% | 1 | 100.00% |
| Total | 24 | 100.00% | 1 | 100.00% |
static int s2mps11_clk_prepare(struct clk_hw *hw)
{
struct s2mps11_clk *s2mps11 = to_s2mps11_clk(hw);
return regmap_update_bits(s2mps11->iodev->regmap_pmic,
s2mps11->reg,
s2mps11->mask, s2mps11->mask);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yadwinder Singh Brar | 38 | 88.37% | 1 | 25.00% |
| Tushar Behera | 3 | 6.98% | 1 | 25.00% |
| Krzysztof Kozlowski | 1 | 2.33% | 1 | 25.00% |
| Vaibhav Hiremath | 1 | 2.33% | 1 | 25.00% |
| Total | 43 | 100.00% | 4 | 100.00% |
static void s2mps11_clk_unprepare(struct clk_hw *hw)
{
struct s2mps11_clk *s2mps11 = to_s2mps11_clk(hw);
regmap_update_bits(s2mps11->iodev->regmap_pmic, s2mps11->reg,
s2mps11->mask, ~s2mps11->mask);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yadwinder Singh Brar | 39 | 90.70% | 1 | 33.33% |
| Tushar Behera | 3 | 6.98% | 1 | 33.33% |
| Krzysztof Kozlowski | 1 | 2.33% | 1 | 33.33% |
| Total | 43 | 100.00% | 3 | 100.00% |
static int s2mps11_clk_is_prepared(struct clk_hw *hw)
{
int ret;
u32 val;
struct s2mps11_clk *s2mps11 = to_s2mps11_clk(hw);
ret = regmap_read(s2mps11->iodev->regmap_pmic,
s2mps11->reg, &val);
if (ret < 0)
return -EINVAL;
return val & s2mps11->mask;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Karol Wrona | 38 | 61.29% | 1 | 50.00% |
| Yadwinder Singh Brar | 24 | 38.71% | 1 | 50.00% |
| Total | 62 | 100.00% | 2 | 100.00% |
static unsigned long s2mps11_clk_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
return 32768;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yadwinder Singh Brar | 19 | 100.00% | 1 | 100.00% |
| Total | 19 | 100.00% | 1 | 100.00% |
static struct clk_ops s2mps11_clk_ops = {
.prepare = s2mps11_clk_prepare,
.unprepare = s2mps11_clk_unprepare,
.is_prepared = s2mps11_clk_is_prepared,
.recalc_rate = s2mps11_clk_recalc_rate,
};
/* This s2mps11_clks_init tructure is common to s2mps11, s2mps13 and s2mps14 */
static struct clk_init_data s2mps11_clks_init[S2MPS11_CLKS_NUM] = {
[S2MPS11_CLK_AP] = {
.name = "s2mps11_ap",
.ops = &s2mps11_clk_ops,
},
[S2MPS11_CLK_CP] = {
.name = "s2mps11_cp",
.ops = &s2mps11_clk_ops,
},
[S2MPS11_CLK_BT] = {
.name = "s2mps11_bt",
.ops = &s2mps11_clk_ops,
},
};
static struct device_node *s2mps11_clk_parse_dt(struct platform_device *pdev,
struct clk_init_data *clks_init)
{
struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
struct device_node *clk_np;
int i;
if (!iodev->dev->of_node)
return ERR_PTR(-EINVAL);
clk_np = of_get_child_by_name(iodev->dev->of_node, "clocks");
if (!clk_np) {
dev_err(&pdev->dev, "could not find clock sub-node\n");
return ERR_PTR(-EINVAL);
}
for (i = 0; i < S2MPS11_CLKS_NUM; i++)
of_property_read_string_index(clk_np, "clock-output-names", i,
&clks_init[i].name);
return clk_np;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yadwinder Singh Brar | 114 | 90.48% | 1 | 25.00% |
| Krzysztof Kozlowski | 12 | 9.52% | 3 | 75.00% |
| Total | 126 | 100.00% | 4 | 100.00% |
static int s2mps11_clk_probe(struct platform_device *pdev)
{
struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
struct s2mps11_clk *s2mps11_clks;
struct clk_hw_onecell_data *clk_data;
unsigned int s2mps11_reg;
int i, ret = 0;
enum sec_device_type hwid = platform_get_device_id(pdev)->driver_data;
s2mps11_clks = devm_kcalloc(&pdev->dev, S2MPS11_CLKS_NUM,
sizeof(*s2mps11_clks), GFP_KERNEL);
if (!s2mps11_clks)
return -ENOMEM;
clk_data = devm_kzalloc(&pdev->dev, sizeof(*clk_data) +
sizeof(*clk_data->hws) * S2MPS11_CLKS_NUM,
GFP_KERNEL);
if (!clk_data)
return -ENOMEM;
switch (hwid) {
case S2MPS11X:
s2mps11_reg = S2MPS11_REG_RTC_CTRL;
break;
case S2MPS13X:
s2mps11_reg = S2MPS13_REG_RTCCTRL;
break;
case S2MPS14X:
s2mps11_reg = S2MPS14_REG_RTCCTRL;
break;
case S5M8767X:
s2mps11_reg = S5M8767_REG_CTRL1;
break;
default:
dev_err(&pdev->dev, "Invalid device type\n");
return -EINVAL;
}
/* Store clocks of_node in first element of s2mps11_clks array */
s2mps11_clks->clk_np = s2mps11_clk_parse_dt(pdev, s2mps11_clks_init);
if (IS_ERR(s2mps11_clks->clk_np))
return PTR_ERR(s2mps11_clks->clk_np);
for (i = 0; i < S2MPS11_CLKS_NUM; i++) {
if (i == S2MPS11_CLK_CP && hwid == S2MPS14X)
continue; /* Skip clocks not present in some devices */
s2mps11_clks[i].iodev = iodev;
s2mps11_clks[i].hw.init = &s2mps11_clks_init[i];
s2mps11_clks[i].mask = 1 << i;
s2mps11_clks[i].reg = s2mps11_reg;
s2mps11_clks[i].clk = devm_clk_register(&pdev->dev,
&s2mps11_clks[i].hw);
if (IS_ERR(s2mps11_clks[i].clk)) {
dev_err(&pdev->dev, "Fail to register : %s\n",
s2mps11_clks_init[i].name);
ret = PTR_ERR(s2mps11_clks[i].clk);
goto err_reg;
}
s2mps11_clks[i].lookup = clkdev_hw_create(&s2mps11_clks[i].hw,
s2mps11_clks_init[i].name, NULL);
if (!s2mps11_clks[i].lookup) {
ret = -ENOMEM;
goto err_reg;
}
clk_data->hws[i] = &s2mps11_clks[i].hw;
}
clk_data->num = S2MPS11_CLKS_NUM;
of_clk_add_hw_provider(s2mps11_clks->clk_np, of_clk_hw_onecell_get,
clk_data);
platform_set_drvdata(pdev, s2mps11_clks);
return ret;
err_reg:
while (--i >= 0)
clkdev_drop(s2mps11_clks[i].lookup);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yadwinder Singh Brar | 203 | 44.52% | 1 | 7.14% |
| Andi Shyti | 110 | 24.12% | 3 | 21.43% |
| Krzysztof Kozlowski | 62 | 13.60% | 4 | 28.57% |
| Tushar Behera | 44 | 9.65% | 2 | 14.29% |
| Stephen Boyd | 16 | 3.51% | 1 | 7.14% |
| Axel Lin | 10 | 2.19% | 1 | 7.14% |
| Chanwoo Choi | 8 | 1.75% | 1 | 7.14% |
| Vaibhav Hiremath | 3 | 0.66% | 1 | 7.14% |
| Total | 456 | 100.00% | 14 | 100.00% |
static int s2mps11_clk_remove(struct platform_device *pdev)
{
struct s2mps11_clk *s2mps11_clks = platform_get_drvdata(pdev);
int i;
of_clk_del_provider(s2mps11_clks[0].clk_np);
/* Drop the reference obtained in s2mps11_clk_parse_dt */
of_node_put(s2mps11_clks[0].clk_np);
for (i = 0; i < S2MPS11_CLKS_NUM; i++) {
/* Skip clocks not present on S2MPS14 */
if (!s2mps11_clks[i].lookup)
continue;
clkdev_drop(s2mps11_clks[i].lookup);
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yadwinder Singh Brar | 50 | 58.82% | 1 | 33.33% |
| Krzysztof Kozlowski | 35 | 41.18% | 2 | 66.67% |
| Total | 85 | 100.00% | 3 | 100.00% |
static const struct platform_device_id s2mps11_clk_id[] = {
{ "s2mps11-clk", S2MPS11X},
{ "s2mps13-clk", S2MPS13X},
{ "s2mps14-clk", S2MPS14X},
{ "s5m8767-clk", S5M8767X},
{ },
};
MODULE_DEVICE_TABLE(platform, s2mps11_clk_id);
static struct platform_driver s2mps11_clk_driver = {
.driver = {
.name = "s2mps11-clk",
},
.probe = s2mps11_clk_probe,
.remove = s2mps11_clk_remove,
.id_table = s2mps11_clk_id,
};
static int __init s2mps11_clk_init(void)
{
return platform_driver_register(&s2mps11_clk_driver);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yadwinder Singh Brar | 16 | 100.00% | 1 | 100.00% |
| Total | 16 | 100.00% | 1 | 100.00% |
subsys_initcall(s2mps11_clk_init);
static void __exit s2mps11_clk_cleanup(void)
{
platform_driver_unregister(&s2mps11_clk_driver);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yadwinder Singh Brar | 14 | 93.33% | 1 | 50.00% |
| Vaibhav Hiremath | 1 | 6.67% | 1 | 50.00% |
| Total | 15 | 100.00% | 2 | 100.00% |
module_exit(s2mps11_clk_cleanup);
MODULE_DESCRIPTION("S2MPS11 Clock Driver");
MODULE_AUTHOR("Yadwinder Singh Brar <yadi.brar@samsung.com>");
MODULE_LICENSE("GPL");
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Yadwinder Singh Brar | 774 | 66.55% | 1 | 5.56% |
| Krzysztof Kozlowski | 126 | 10.83% | 7 | 38.89% |
| Andi Shyti | 111 | 9.54% | 3 | 16.67% |
| Tushar Behera | 64 | 5.50% | 2 | 11.11% |
| Karol Wrona | 40 | 3.44% | 1 | 5.56% |
| Chanwoo Choi | 17 | 1.46% | 1 | 5.56% |
| Stephen Boyd | 16 | 1.38% | 1 | 5.56% |
| Axel Lin | 10 | 0.86% | 1 | 5.56% |
| Vaibhav Hiremath | 5 | 0.43% | 1 | 5.56% |
| Total | 1163 | 100.00% | 18 | 100.00% |
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